Hi all.
Sorry for not being here while you discuss this issue...
I DO want it just for code reuse, nothing else...
The ancestor remote interface will never be deployed as a remote interface,
it will only be derived from.
Could you please explain "inheritance in Java is about IsA behaviour not
code re-use" ? (what is IsA ?)
Object Oriented was originally thought of as a code reuse method, wasnt it ?
(I mean, components and stuff came later, didnt they ?)
Shahar
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Kenworthy, Edward
Sent: Friday, January 05, 2001 10:03 AM
To: 'jBoss'
Subject: RE: [jBoss-User] Inheritance in CMP beans - followup
Hi Shahar
Don't do it.
If you have remote interface A and create remote interface B by extending A
then you are saying "I can use an instance of B to substitue for an instance
A". THIS IS NOT TRUE !
EJB does not properly support inheriting of one bean from another. By which
I mean, you can do it, BUT it will not behave as it should. (eg IsA doesn't
work!).
If you don't care about this, ie you are using the inheritance for code
re-use then I would do it in a different way because otherwise you would
confuse people (inheritance in Java is about IsA behaviour not code re-use).
I would do it by factoring out a common base (which is NOT a remote
interface) which both A and B extend.
Edward
-----Original Message-----
From: Shahar [mailto:[EMAIL PROTECTED]]
Sent: 03 January 2001 17:12
To: [EMAIL PROTECTED]
Subject: [jBoss-User] Inheritance in CMP beans - followup
[Hi again]
off course, I also intend to extend the remote interface. Possible ?
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